Machine for coating strips of lumber



April 28, 1931. I. F.- DITTMAR 1,802,410

MACHINE FOR COATING STRIPS OF LUMBER Filed Mayl6 19 5 4 Sheets-Sheet 1 JW/A ZFZ/ 77/14/99? Ajaril 28, 1 931. 1 DlTTMAR 1,802,410

MACHINE FOR COATING STRIPS OF LUMBER Filed May 16 1925 4 Sheets-Sheet '2 April 28, 1931. DlTTMAR 1,802,410

MACHINE FOR COATING STRIPS 0F LUMBER Filed May 1 1925 4 Sheets-Sheet 3 6 v Jg ll l,

April 28, 1931. 1 F. DITTMAR 1,802,410

MACHINE FOR GOAT ING STRIPS 0F LUMBER Filed May 16, 1925 4 Sheets-Sheet 4 Y K v gwu mtm appended claims.

Patented Apr. 28, 1931 UNITED STATES PATENT OFFICE,

IRVLN F. DITTMAR, OF. WILLIAMSPORT, PENNSYLVANIA, ASSIGNOR TO THE CROMAR COMPANY, OF WILLIAMSPORT, PENNSYLVANIA, A CORPORATION OF PENNSYL- VAN IA Original application filed September such as disclosed in the application of Elmer C. Dittmar, filed July 31, 1919, Serial Numbers 314,464 to 314,467, renewed November 11, 1922, Serial Numbers 600,47 6 to600,479, and isa divisional application of my application filed September 13, 1924, Serial Number 737,528, the object being toprovide means for firstcleaning and then tilting the strip of material after it'has its face coated so that the strip of material will be deposited on the receiving tablewithclean edges and with its coated face on top so as to prevent the marring of-the finished face of;the strip after it has passed through themachine' Another and further object of the invention is to providea coatingmachine wherein a strip is brushedso as to remove any foreign particles from the edge ofthe strip v after 'it 'leavesthe guide way and before it reaches the tilting device; 1'

Other and further objects and advantages of the invention will be. hereinafter set forth and the novel features thereof definedby the In the drawings,- i W e 1 Figure 1 is a side elevation of a finishing imachine showing the'applicationiof-my improved construction of 7 devices thereto; a

cleaning 7 and I tilting Figure 2 is a side elevation of thedelivery end of the machine showing the mannerof mounting the tilting and cleaning devices V Figure 3 is a sectional view through the brush support;

Flgure 4 is a detail elevation of'the sup- Figure 5 is an edge view of the'same V .Figure I6 is a vertical sectionthrough-the ing-up roll.

In the drawings 1 indicates a frame of a strip coating machine upon which is mounted a guideway 2 formed .of tracks adjustably MAGHINE non COATING srnrrs or LUMBER 13;"1924, Serial No. 737,528. Divided and this application filed May 16, 1925. Serial No. 30,736.-

supported through which a strip ofmaterial I to be finished is adapted to be forced by feed rollers 3rmovably mounted so as to be adjusted towards and away from the strip in order to allow the rollers to be moved into and out of; contact with the strip in order to move the strip and stop the movement thereof, the feed rollers being driven by suitable driving mechanism as clearlyshown which forms no part of this invention. r The strip is coated in its passage through the machine by a coating receptacle '5, constructed substantially in the same manner as disclosed in the applications of Elmer C. Dittmar above referred to and is then bur-C nished by a rotary burnishing device 6 driven by suitable driving means, the succeeding strip serving the purpose to force out the preceding strip so that strips of material are fed continuously through the machine on edge and are finished in their passage therethrough, the above description being given so that the operation of my improved construction of cleaning and tilting device when applied to a machine of this nature can be readily understood.

1 It is, of course, understood that I do not wish to limit myself to the application of my improved construction of cleaning and tilting device to any particular construction of coating machine as I am aware that with various changes, the cleaning and tilting device can be applied to various forms ofcoating machines in which a strip of material is moved continuously therethrough without departing? from the spirit of my invention.

' Secured to the frame 1 or bed of the machine at the delivery end thereof is an angular post 7 extending outwardly beyond the end of the guideway as clearly shown for the purpose hereinafter specified.

Carried by the post 7 is a block 8 provided with an eccentric pin 9 on which is mounted a back-up roller 10 adapted to engage the back of a strip in its passage through the guideway, said roller being adjusted and set so as to engage the back'of the strip as it passes through the guideway. Fixed on the post 7 is a block 11 provided with a slot in which is adjustably mounted a stud shaft 12 capable of being adjusted vertically by a screw 13, the end of the stud shaft being provided with a head 14, over which is revoluly mounted a hub 15, said stud being provided with an oil passage 16 for :l'eeding lubricant to the hub 15.

Secured to the end of the hub is an idle roller 17, the )eriphery of which is prefer ably formed \l -shapc in cross section and is adapted to fit within the V groove of the strip of material in its )assage over the same.

In the embodiment o my invention as herein shown, I have illustrated and described the tilting and cleaning device especially adapted to be used in connection with a finishing machine for coating a strip of flooring which has a V-shaped groove along one edge and a V-shaped tongue along its other edge and the cooperating parts are formed this shape so as to support the strip after it leaves the guideway.

It is, of course, understood that I do not wish to limit myself to an idle supporting roller with any particular construction of periphery as the shape of the periphery will be changed to correspond to the edge of the strip of material which it engages and supports.

The upper end of the post 7 is turned back upon itself and has a bore formed through the aligning parts thereof in which is mounted an oscillating shaft 19 locked in position therein by a key 20 for preventing endwise movement, the oscillating shaft being provided with a transverse bore 21 intersected by a threaded bore 22 in which is mounted a thumb screw 23 for the purpose hereinafter fully described.

Extending through the transverse bore 21 of the oscillating shaft 19 is a lever arm 24 carrying a revolubly mounted tilting roller 25 adapted to bear on the upper edge of the strip of material in its passage through the machine so as to tilt the strip on the supporting or idle roll 17 so as to cause the strip of material to be delivered on the receiving table with its coated face up, thereby preventing the finished face of the strip from being marred or injured in any way in being delivered from the machine.

The face of the tilting roller 25 is maintained clean by a pivoted lever 26 carrying a scraper 27 which has a shearing action on the face of the tilting roller, the construction and operation of the tilting roller being clearly illustrated in my companion application.

In this embodiment of my invention. the position of the tilting roller and supporting roller is such that a pair of brushes 28 and 29 can be placed beyond the end of the guide way between said end and the tilting roller and these brushes are adapted to be driven by belts 30 and 31 from a driving shaft of the machine so that the edges of the strip will be cleaned before it reaches the tilting device,

said brushes being adapted to rotate in a reverse direction to the movement of the strip.

The brushes 28 and 29 are carried by shafts 32 and 33 mounted in bearings formed on the ends of lever arms 34 and 35 as clearly shown. The brush supports or bearing arms are mounted on bearings carried by a post 36 extending from the bed alongside of the guideway and to which the gindeway is seecured. The brushes are adjusted by links 37 and 38 working through an angle plate 39 carried by the post 36, the ends of the links being threaded and having handles screwed thereon so that on the turning of the handles, the brushes can be adjusted up and down so as to adjust the position of the brushes in respect to the strip of material passing therethrough and to compensate for the wear on the brushes when in use= This particular construction of mounting the brushes on lever arms and having the same capable of being adjusted up and own provides a novel means for mounting the brushes and for adjusting the same without interfering with the rotation of the brushes, the brush shafts being provided with pulleys over which the drive belts ass so as to rotate these brushes in the opposite direction to the strip of material whereby the edges of the strips are thoroughly cleaned as they leave the guideway so that when the strip reaches the tilting roll it is clean, thereby preventing the tilting roll from forcing any foreign matter over on the face of the strip.

From the foregoing description it will be seen that I have provided a cleaning device for finishing machines wherein a pair of brushes are disposed at the delivery end of the machine so that the strip delivered therefrom is cleaned before it reaches the tiltin roll whereby I am able to coat and finilfi stri s of lumber and deliver the strips of lium er onto a receiving table in perfect conltion.

While in the drawing and specification I have shown and described a tilting and cleanlng device especially adapted to be used in connection with a coating machine, it is, of

course, understood that the tilting and cleanin device can be used in connection with" '1. The combination with a machine of the kind described having means for guiding and propelling a strip on edge in its passage therethrough, of a pair of lever arms mounted on the machine carrying bearings at their free ends, shafts mounted in said bearings carrying brushes, means for revolving said shafts and means for moving said lever arms and holding the same in adjusted position.

2. A machine of the kind described having means for guiding and propelling a strip on edge in its passage therethrough, of a pair of lever arms carrying rotary brushes arranged to engage a strip in its passage there through, links connected to said lever arms provided with threaded ends and handles provided with threaded sockets to receive the threaded ends of said links for adjusting said brushes in respect to the guiding means of said machine.

3. A machine of the kind described having means for guiding and propellin a strip of lumber in its passage therethroug of a pair of lever arms mounted on the machine at the delivery end thereof, rotary shafts mounted in said lever arms, brushes carried by said shafts, belts for driving said shafts and means for adjusting the position of said lever arms.

In testimony whereof I hereunto aflix my signature.

IRVIN F. DITTMAR. 

